Improvement in carriage-wheel hubs



J. DUMP. CARRIAGE WHEEL HUB.

No. 100,873, E Patented Mar. 15.; 1870.

r I B ATTEST neat swa fitment @iijiine.

JAGOB DUMP, OF KINGSTON, OHIO.

Letters Patent No. 100,873, dated March 15, 187 O.

IMPROVEMENT IN CARRIAGE-WHEEL HUBS.

The Schedule referred to in these LettersPatent and. making part of thesame.

"I, JACOB DUMPfof'Kingston, Ross c0unty, Ohio,

have invented a new'and useful Metallic Hub for Wagons and Carriages, ofwhich the following is a specification.

Nature and Objects of the Invention.

General Description with Reference to the Drawings. Figure 1 is aperspective View of the two castings which compose my hub, detached,

Figure 2 is an axial section of the hub.

My hub comprises an ,inner section or casting, A, and an outer sectionor casting, B, both having the customary bore or central aperture, 0,for the axle spindle.

The portion or casting A has around its periphery a series ofequidistant indentations, D, which, when closed-by the application ofthe casting B, constitute the 'moi'tices to receive the tenons E of thespokes E.

The casting B has a counter-bore, I), which tit-s over the centralcylindrical portion a of the casting A.

The portion or casting B has also an annular tongue, F, which, when thehub is put together, enters corresponding grooves, G and e, in thecasting A, and in the front edges of the spokes, so as to hold the twocastings and also the spokes all firmly in place.

Both castings are traversed longitudinally and at equal distances byscrew-bolts H H H, having bent heads h which come flush with theperiphery of the casting B and nuts I, which engage on said bolts inrear of the casting A.

In practice the spoke-tenons are made somewhat widerthan the mortices inthe casting A, so as to be susceptible of being tightened at any time bysimply turning the nuts I.

Two part metallic hubs, thus united by bolts, are cheaper and easier tomanufacture and also stronger than those which are united by'a cutthread.

Ola-tin.

I claim herein as my invention- I The combination of the inner sectionA, constructed with indentations D and grooves G, and the outer sect-ionB, constructed with a couuter-boreband tongue F, the two members beingconnected by screw-bolts H h and nuts I, so as to constitute a compoundhub, all substantially as represented and described.

-In testimony of which invention I hereunto set my hand.

JACOB DUMP. Witnesses ;.x

GEO. H. KNIGHT, T. I. N. LINDSEY.

